Analysis of Surface Wind Speed Changes in Shanxi during 1960-2019
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Abstract:
Based on the observed wind speed data from 1960 to 2019 from 108 ground meteorological stations in Shanxi Province, the trend characteristics of surface wind speeds in Shanxi over the past 60 years are analyzed by the linear fitting, MK test and other methods. The results show that the wind speeds were relatively high in the northwestern and western mountainous areas, the north part of Jinzhong, the southeast part of Changzhi, and the southwest part of Yuncheng Basin, while it was relatively low in the central basin. The wind speed was the highest in spring, followed by winter and summer, and the lowest in autumn. In recent 60 years, the annual and seasonal average wind speeds in Shanxi had obvious change trends and stage characteristics. From the 1960s to the early 1970s, the wind speed increased, and then decreased significantly in the late 1980s. Since the 1990s, the wind speed decreased and slowed down, while the winter wind speed have increased significantly since 1990. The MK test of surface wind speed in Shanxi shows that the abrupt change time of annual, spring, summer, autumn average wind speed was 1982, 1984, 1984 and 1982, respectively, but there was no significant abrupt change in winter average wind speed.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.